BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	p_brand,
	p_type,
	p_size,
	count(distinct ps_suppkey) as supplier_cnt
from
	partsupp,
	part
where
	p_partkey = ps_partkey
	and p_brand <> 'Brand#34'
	and p_type not like 'MEDIUM BURNISHED%'
	and p_size in (34, 36, 23, 12, 38, 29, 28, 10)
	and ps_suppkey not in (
		select
			s_suppkey
		from
			supplier
		where
			s_comment like '%Customer%Complaints%'
	)
group by
	p_brand,
	p_type,
	p_size
order by
	supplier_cnt desc,
	p_brand,
	p_type,
	p_size;
                                                                               QUERY PLAN                                                                               
------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=457451.01..457521.25 rows=28094 width=40) (actual time=50882.607..50891.889 rows=27837 loops=1)
   Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size
   Sort Method: quicksort  Memory: 2967kB
   Buffers: shared hit=209853 read=2601 written=116
   ->  GroupAggregate  (cost=447602.66..455375.15 rows=28094 width=40) (actual time=49521.905..50478.116 rows=27837 loops=1)
         Buffers: shared hit=209837 read=2601 written=116
         ->  Sort  (cost=447602.66..449100.97 rows=599324 width=40) (actual time=49521.783..49807.073 rows=1192018 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 142279kB
               Buffers: shared hit=209837 read=2601 written=116
               ->  Hash Join  (cost=58137.36..390088.60 rows=599324 width=40) (actual time=1915.010..17089.713 rows=1192018 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=209837 read=2601 written=116
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=1.163..7879.458 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=169312 read=1703 written=55
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.130..1.082 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2 written=1
                     ->  Hash  (cost=54383.11..54383.11 rows=299662 width=40) (actual time=1913.254..1913.254 rows=298158 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21567kB
                           Buffers: shared hit=40525 read=898 written=61
                           ->  Bitmap Heap Scan on part  (cost=5787.28..54383.11 rows=299662 width=40) (actual time=238.550..1693.564 rows=298158 loops=1)
                                 Recheck Cond: (p_size = ANY ('{34,36,23,12,38,29,28,10}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#34'::bpchar) AND ((p_type)::text !~~ 'MEDIUM BURNISHED%'::text))
                                 Rows Removed by Filter: 23033
                                 Buffers: shared hit=40525 read=898 written=61
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5712.37 rows=322953 width=0) (actual time=222.642..222.642 rows=321191 loops=1)
                                       Index Cond: (p_size = ANY ('{34,36,23,12,38,29,28,10}'::integer[]))
                                       Buffers: shared hit=9 read=896 written=61
 Total runtime: 50913.289 ms
(32 rows)

COMMIT;
COMMIT